20" iMac Power Supply differences
I have an early 2009 iMac with a blown power supply, it actually threw sparks. I am looking for replacements, the part is 661-4987. It is not a cheap part. In looking around I see the 661-4433, 661-4670. They are cheaper, on ebay at least. all are rated 180w, have same plug design, are visually the same layout/component location. Does anyone know of differences between them. thanks
Is this a good question?